In 2007, Danfoss introduced a series of pressure transmitters with a dual output instead of just one analogue output signal. Based on feedback from key customers, the company now offers the MBS1300 and 1350 with a maximum load of 150 mA and an open-collector switch output with a direct connection to the ground.
- The MBS1300 and 1350 can be fit for a customer’s mobile hydraulic application.
Compared to an open collector switch, a mechanical switch has two stages, open or closed. But after a certain number of operations, leakage, inaccuracy, or unreliable electrical switch performance occurs.
The recent pressure transmitters, however, come with a variable signal and a switch function. With a load opportunity of up to 150 mA, the transmitters can drive relays directly to activate hydraulic valves, pumps, or warning lights. Furthermore, the transmitters have excellent long term stability with almost zero drifts. Regardless of how many switch functions are made with the open collector, it’s an electronic switch, so there is no mechanical wear.
The MBS1300 and the MBS1350 (including a restrictor) are available in different variations of pressure and electrical connectors and can replace most mechanical switches used in hydraulic processes. The low-level signal is in the mV range.
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